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minor 32x cleanup + comment

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This commit is contained in:
davidhay 2008-11-08 15:11:50 +00:00
parent 7d5f7355a4
commit 8d4cad0b8c
1 changed files with 8 additions and 7 deletions
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15
src/mame/drivers/megadriv.c
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@ -36,6 +36,8 @@
Fix 32X support (not used by any arcade systems?)
- this seems to require far greater sync and timing accuracy on rom / ram access than MAME can provide
- World Series Baseball 95 (and others) are odd, they write data to the normal DRAM framebuffer
expecting it to act like the 'overwrite area' (where 00 bytes ignored) this can't be right..
@ -2623,7 +2625,6 @@ static WRITE16_HANDLER( _32x_68k_dram_w )
static READ16_HANDLER( _32x_68k_dram_overwrite_r )
{
return _32x_access_dram[offset+0x10000];
return 0x0000;
}
static WRITE16_HANDLER( _32x_68k_dram_overwrite_w )
@ -3389,7 +3390,7 @@ static WRITE16_HANDLER( _32x_sh2_paletteram16_w ) { _32x_68k_palette_w(machine,o
/**********************************************************************************************/
static READ16_HANDLER( _32x_sh2_framebuffer_dram16_r ) { return _32x_68k_dram_r(machine,offset,mem_mask); }
static WRITE16_HANDLER( _32x_sh2_framebuffer_dram16_w ) { return _32x_68k_dram_w(machine,offset,data,mem_mask); }
static WRITE16_HANDLER( _32x_sh2_framebuffer_dram16_w ) { _32x_68k_dram_w(machine,offset,data,mem_mask); }
/**********************************************************************************************/
// SH2 side 4020000 - 403ffff
@ -3398,7 +3399,7 @@ static WRITE16_HANDLER( _32x_sh2_framebuffer_dram16_w ) { return _32x_68k_dram_w
/**********************************************************************************************/
static READ16_HANDLER( _32x_sh2_framebuffer_overwrite_dram16_r ) { return _32x_68k_dram_overwrite_r(machine,offset,mem_mask); }
static WRITE16_HANDLER( _32x_sh2_framebuffer_overwrite_dram16_w ) { return _32x_68k_dram_overwrite_w(machine,offset,data,mem_mask); }
static WRITE16_HANDLER( _32x_sh2_framebuffer_overwrite_dram16_w ) { _32x_68k_dram_overwrite_w(machine,offset,data,mem_mask); }
@ -6709,8 +6710,8 @@ DRIVER_INIT( _32x )
_32x_240mode = 0;
// checking if these help brutal, they don't.
// cpunum_set_info_int(2, CPUINFO_INT_SH2_DRC_OPTIONS, SH2DRC_STRICT_VERIFY|SH2DRC_STRICT_PCREL);
// cpunum_set_info_int(3, CPUINFO_INT_SH2_DRC_OPTIONS, SH2DRC_STRICT_VERIFY|SH2DRC_STRICT_PCREL);
cpunum_set_info_int(2, CPUINFO_INT_SH2_DRC_OPTIONS, SH2DRC_COMPATIBLE_OPTIONS);
cpunum_set_info_int(3, CPUINFO_INT_SH2_DRC_OPTIONS, SH2DRC_COMPATIBLE_OPTIONS);
DRIVER_INIT_CALL(megadriv);
}
@ -6742,7 +6743,7 @@ ROM_START( 32x_bios )
// ROM_LOAD( "32x_darx.bin", 0x000000, 0x200000, CRC(22d7c906) SHA1(108b4ffed8643abdefa921cfb58389b119b47f3d) ) // ?? probably abuses the hardware, euro only ;D
// ROM_LOAD( "32x_prim.bin", 0x000000, 0x400000, CRC(e78a4d28) SHA1(5084dcca51d76173c383ab7d04cbc661673545f7) ) // needs tight sync or fails after sega logo - works with tight sync, but VERY slow
// ROM_LOAD( "32x_brut.bin", 0x000000, 0x300000, CRC(7a72c939) SHA1(40aa2c787f37772cdbd7280b8be06b15421fabae) ) // needs *very* heavy sync to work..
ROM_LOAD( "32x_temp.bin", 0x000000, 0x300000, CRC(14e5c575) SHA1(6673ba83570b4f2c1b4a22415a56594c3cc6c6a9) ) // works (heavy slowdowns) RV emulation - really should hide 68k rom when transfer is off
// ROM_LOAD( "32x_temp.bin", 0x000000, 0x300000, CRC(14e5c575) SHA1(6673ba83570b4f2c1b4a22415a56594c3cc6c6a9) ) // works (heavy slowdowns) RV emulation - really should hide 68k rom when transfer is off
// ROM_LOAD( "32x_vr.bin", 0x000000, 0x300000, CRC(7896b62e) SHA1(18dfdeb50780c2623e60a6587d7ed701a1cf81f1) ) // doesn't work
// ROM_LOAD( "32x_vf.bin", 0x000000, 0x400000, CRC(b5de9626) SHA1(f35754f4bfe3a53722d7a799f88face0fd13c424) ) // locks up when starting game
// ROM_LOAD( "32x_zaxx.bin", 0x000000, 0x200000, CRC(447d44be) SHA1(60c390f76c394bdd221936c21aecbf98aec49a3d) ) // nothing
@ -6763,7 +6764,7 @@ ROM_START( 32x_bios )
// ROM_LOAD( "32x_nba.bin", 0x000000, 0x400000, CRC(6b7994aa) SHA1(c8af3e74c49514669ba6652ec0c81bccf77873b6) ) // crash
// ROM_LOAD( "32x_nfl.bin", 0x000000, 0x300000, CRC(0bc7018d) SHA1(a0dc24f2f3a7fc5bfd12791cf25af7f7888843cf) ) // doesn't boot
// ROM_LOAD( "32x_rbi.bin", 0x000000, 0x200000, CRC(ff795fdc) SHA1(4f90433a4403fd74cafeea49272689046de4ae43) ) // doesn't boot
// ROM_LOAD( "32x_wsb.bin", 0x000000, 0x300000, CRC(6de1bc75) SHA1(ab3026eae46a775adb7eaebc13702699557ddc41) ) // working - overwrite problems
ROM_LOAD( "32x_wsb.bin", 0x000000, 0x300000, CRC(6de1bc75) SHA1(ab3026eae46a775adb7eaebc13702699557ddc41) ) // working - overwrite problems
// ROM_LOAD( "32x_mk2.bin", 0x000000, 0x400000, CRC(211085ce) SHA1(f75698de887d0ef980f73e35fc4615887a9ad58f) ) // working
// ROM_LOAD( "32x_sang.bin", 0x000000, 0x400000, CRC(e4de7625) SHA1(74a3ba27c55cff12409bf6c9324ece6247abbad1) ) // hangs after sega logo